According to the leaf symptoms and the analysis of nutrient elements in leaf and soil，it was determined that the leaf yellowing of Huanghua pear plants on saline-alkaline soil on seashore was attributed to Fe deficiency.The leaf yellowing disease of pear plants could be corrected in short time by raising the content of chlorophyll in leaves through intensively injec- ted into trunk.The content of chlorophyll in leaves was from 0.306 mg?g -1 FW to 0.812 mg?g -1 FW through intensively injected into trunk.The effect of spray on leaves was obvious.The content of chlorophyll in leaves was from 0.306 mg?g -1 FW to 0.626 mg?g -1 FW after 10 days.The differences between fertilization on saline-alkaline soil on sea- shore and CK were not obvious in short time.There was a correlation among the content of chlorophyll in leaves and iron. Correlation coefficient was 0.887 3.